20654672

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{67943}}^1$

素因数の和:67970

約数の個数: 20

約数和(自身を含む): 42125280

約数和(自身を除く): 21470608

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 67943, 135886, 271772, 543544, 1087088, 1290917, 2581834, 5163668, 10327336, 20654672]

約数ペア:

[(1, 20654672), (2, 10327336), (4, 5163668), (8, 2581834), (16, 1290917), (19, 1087088), (38, 543544), (76, 271772), (152, 135886), (304, 67943)]